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Diodes Incorporated AP7383-18Y-13
- Part No.:
- AP7383-18Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7383-18Y-13.pdf
- Description:
- IC REG LIN 1.8V SOT89 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:2,189
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Product details
Overview
AP7383-18Y-13 from Diodes Incorporated is a fixed-output 1.8V, 150mA ultra-low dropout (ULDO) linear regulator in SOT89 package, featuring 30V max input voltage, 500mV dropout at 50mA, ±1% output accuracy, and 1.8µA quiescent current - designed for USB-powered instrumentation and portable battery-operated systems requiring stable low-voltage rail generation.
For engineers reviewing the AP7383-18Y-13 datasheet, AP7383-18Y-13 pinout, AP7383-18Y-13 application, or AP7383-18Y-13 equivalent, this page delivers verified electrical specs, thermal performance data, SOT89 terminal mapping, and real-world use cases for low-power embedded power management.
Technical Context
The AP7383-18Y-13 integrates a precision voltage reference, error amplifier, and current-limit circuit to maintain regulation across 3.5–30V input while delivering 1.8V ±1% over -40°C to +125°C junction temperature. Its internal enable logic supports external ON/OFF control via the EN pin in W5 variants, though the SOT89 (Y) package uses a fixed-enable configuration with no EN terminal.
Thermal shutdown activates at +160°C with +20°C hysteresis, and the device achieves excellent line regulation (0.05%/V) and load regulation (0.5%) using only 1µF ceramic input/output capacitors - eliminating need for electrolytic or tantalum components in space-constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±1% - ensures stable core voltage for 1.8V microcontrollers and low-power sensors |
| Max Input Voltage | 30V - supports direct connection to unregulated 24V industrial rails or automotive battery inputs |
| Dropout Voltage | 500mV @ 50mA - enables regulation down to VIN = 2.3V, critical for single-cell Li-ion or alkaline battery operation |
| Quiescent Current | 1.8µA - minimizes standby power loss in always-on IoT edge nodes and battery-backed systems |
| Current Limit | 150mA - provides short-circuit protection without external current-sense resistors |
| Thermal Shutdown | +160°C with +20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking |
| ESD Rating | 2500V HBM - enhances robustness against handling-induced transients in manufacturing and field service |
Pinout & Package
SOT89 package (3-pin, TO-243AA), thermally enhanced with exposed tab connected to GND - requires minimum 25mm² copper pour on PCB for optimal thermal dissipation at full 150mA load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input supply connection; accepts 3.5–30V DC; decoupled by 1µF ceramic capacitor |
| 2 | GND | Power ground reference and thermal path; must be tied directly to large copper area |
| 3 | VOUT | Regulated 1.8V output; drives load up to 150mA with <0.5% load regulation |
Key Features
| Feature | Design Value |
|---|---|
| Wide-input operation | 3.5–30V input range eliminates need for pre-regulation in multi-rail systems |
| Ultra-low IQ | 1.8µA ground current at zero load enables >1-year battery life in coin-cell-powered devices |
| Ceramic capacitor compatibility | Stable with 1µF X5R/X7R ceramics - reduces BOM cost and board area vs. tantalum alternatives |
| High accuracy output | ±1% initial tolerance and ±100ppm/°C tempco ensure reliable logic-level compliance across temperature |
| Thermal protection | Auto-recovery shutdown prevents latch-up during transient overloads or ambient temperature spikes |
Applications
| Portable Medical Sensors | Industrial Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Primary 1.8V LDO supplying ADC, sensor interface, and BLE SoC core voltage. Use Value: 1.8µA quiescent current extends battery life beyond 18 months; 500mV dropout allows operation until cell voltage drops to 2.3V. | Use Scenario: Remote environmental sensor node deployed in factory floor with 24V DC supply and wide ambient temperature swing. IC Role / Device Role / Timing Role: Local 1.8V rail generator for microcontroller and precision analog front-end. Use Value: 30V input rating accepts unregulated 24V bus; ±1% accuracy maintains ADC reference stability across -40°C to +85°C. |
| USB-Powered Test Equipment | Low-Power IoT Edge Nodes |
Use Scenario: Handheld oscilloscope probe powered via USB 5V port with internal 1.8V logic rail. IC Role / Device Role / Timing Role: Post-regulator converting USB 5V to clean 1.8V for FPGA configuration and digital I/O buffers. Use Value: Low noise and 0.05%/V line regulation prevent digital timing jitter during USB voltage sag under high-current loads. | Use Scenario: Battery-operated LoRaWAN node sampling temperature every 10 minutes and transmitting hourly. IC Role / Device Role / Timing Role: Always-on 1.8V supply for RTC, MCU sleep mode, and wake-up circuitry. Use Value: Thermal shutdown +20°C hysteresis prevents false resets during summer deployment; RoHS/Green compliance meets EU environmental mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ULDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-1802E/TO | 250mV dropout @ 250mA, but only 6V max input; 1.6µA IQ | Limited to low-input applications (e.g., 3.3V or 5V rails); unsuitable for 24V industrial use | Select when input ≤6V and lower dropout is prioritized over input voltage range |
| TPS7A0518PDBVR | 170mV dropout @ 200mA, 5.5V max input, integrated thermal foldback | Requires pre-regulation for >5.5V sources; higher cost per unit in SOT23-5 | Choose for ultra-low-dropout needs in compact 3.3V/5V systems where board space is constrained |
Compared with MCP1700-1802E/TO and TPS7A0518PDBVR, the AP7383-18Y-13 uniquely balances 30V input capability, 1.8V output accuracy, and SOT89 thermal performance - making it the only option among the three viable for direct 24V-to-1.8V conversion without external FETs or buck stages.
Availability
AP7383-18Y-13 is available at Aetrix Electronics and suitable for portable medical sensors, industrial data loggers, and USB-powered test equipment requiring stable component supply with guaranteed long-term continuity.
Supply support for AP7383-18Y-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design centers in Asia, Europe, and the U.S., and manufacturing in ASE, J-Devices, and its own facilities.
The AP7383 series belongs to Diodes' high-voltage ULDO regulator product line, engineered specifically for battery-powered and industrial applications demanding wide-input operation, ultra-low IQ, and robust thermal protection in compact packages.
FAQ
What is the maximum continuous output current for AP7383-18Y-13?
The AP7383-18Y-13 is rated for 150mA continuous output current under recommended operating conditions (TJ ≤ +125°C, with adequate PCB copper for heat dissipation). Absolute maximum rating is 200mA, but sustained operation above 150mA requires derating based on thermal resistance (θJA = 118°C/W for SOT89) and ambient temperature.
Does AP7383-18Y-13 include an enable pin?
No. The AP7383-18Y-13 in SOT89 package has no enable (EN) pin - it operates in fixed-enable mode. Enable functionality is only available in the SOT25 (W5/WR/WW) variants, which feature a dedicated EN terminal. This simplifies layout for always-on applications but removes external ON/OFF control capability.
Can AP7383-18Y-13 be used with ceramic output capacitors?
Yes. The AP7383-18Y-13 is explicitly designed for stability with low-ESR ceramic capacitors - a 1µF X5R or X7R ceramic capacitor is sufficient for both input and output. No series ESR or additional compensation components are required, reducing bill-of-materials cost and PCB footprint.
What is the thermal shutdown behavior of AP7383-18Y-13?
The device enters thermal shutdown at +160°C junction temperature and automatically recovers once junction temperature falls by +20°C hysteresis (i.e., below +140°C). During shutdown, VOUT drops to near-zero, and the regulator resumes normal operation without external reset - providing self-protecting behavior during transient overloads or inadequate heatsinking.
AP7383-18Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 30V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 3 µA
- Current - Supply (Max):
- 3 µA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Current Limit, Thermal Shutdown
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP7383-18Y-13 FAQ
1.How can I place an order for AP7383-18Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7383-18Y-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AP7383-18Y-13 reliable?
The price and inventory of AP7383-18Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7383-18Y-13 is usually 5 days.
3.What payment methods are accepted for AP7383-18Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7383-18Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7383-18Y-13?
AP7383-18Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7383-18Y-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AP7383-18Y-13?
For technical support, including AP7383-18Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7383-18Y-13 requirements.
6.How does Aetrix verify that AP7383-18Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7383-18Y-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AP7383-18Y-13 meets industry standards.
7.What is the process for return or replacement of AP7383-18Y-13?
All AP7383-18Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7383-18Y-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AP7383-18Y-13 part is unused and in its original packaging.
Return procedure for AP7383-18Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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